<template>
  <div class="shoppingCart">
    <!-- 购物车头部 -->
    <div class="cart-header">
      <div class="cart-header-content">
        <p>
          <i class="el-icon-shopping-cart-full" style="color:#ff6700; font-weight: 600;"></i>
          我的购物车
        </p>
        <span>温馨提示：产品是否购买成功，以最终下单为准哦，请尽快结算</span>
      </div>
    </div>
    <!-- 购物车头部END -->

    <!-- 购物车主要内容区 -->
    <div class="content" v-if="getShoppingCart.length>0">
      <ul>
        <!-- 购物车表头 -->
        <li class="header">
          <div class="pro-check">
            <el-checkbox v-model="isAllCheck">全选</el-checkbox>
          </div>
          <div class="pro-img"></div>
          <div class="pro-name">商品名称</div>
          <div class="pro-price">单价</div>
          <div class="pro-num">数量</div>
          <div class="pro-total">小计</div>
          <div class="pro-action">操作</div>
        </li>
        <!-- 购物车表头END -->

        <!-- 购物车列表 -->
        <li class="product-list" v-for="(item,index) in getShoppingCart" :key="item.id">
          <div class="pro-check">
            <el-checkbox :value="item.check" @change="checkChange($event,index)"></el-checkbox>
          </div>
          <div class="pro-img">
            <router-link :to="{ path: '/goods/details', query: {productID:item.productID} }">
              <img :src="$target + item.productImg" />
            </router-link>
          </div>
          <div class="pro-name">
            <router-link
                    :to="{ path: '/goods/details', query: {productID:item.productID} }"
            >{{item.productName}}</router-link>
          </div>
          <div class="pro-price">{{item.price}}元</div>
          <div class="pro-num">
            <el-input-number
                    size="small"
                    :value="item.num"
                    @change="handleChange($event,index,item.productID)"
                    :min="1"
                    :max="item.maxNum"
            ></el-input-number>
          </div>
          <div class="pro-total pro-total-in">{{item.price*item.num}}元</div>
          <div class="pro-action">
            <el-popover placement="right">
              <p>确定删除吗？</p>
              <div style="text-align: right; margin: 10px 0 0">
                <el-button
                        type="primary"
                        size="mini"
                        @click="deleteItem($event,item.id,item.productID)"
                >确定</el-button>
              </div>
              <i class="el-icon-error" slot="reference" style="font-size: 18px;"></i>
            </el-popover>
          </div>
        </li>
        <!-- 购物车列表END -->
      </ul>
      <div style="height:20px;background-color: #f5f5f5"></div>
      <!-- 购物车底部导航条 -->
      <div class="cart-bar">
        <div class="cart-bar-left">
          <span>
            <router-link to="/goods">继续购物</router-link>
          </span>
          <span class="sep">|</span>
          <span class="cart-total">
            共
            <span class="cart-total-num">{{getNum}}</span> 件商品，已选择
            <span class="cart-total-num">{{getCheckNum}}</span> 件
          </span>
        </div>
        <div class="cart-bar-right">
          <span>
            <span class="total-price-title">合计：</span>
            <span class="total-price">{{getTotalPrice}}元</span>
          </span>
          <router-link :to="getCheckNum > 0 ? '/confirmOrder' : ''">
            <div :class="getCheckNum > 0 ? 'btn-primary' : 'btn-primary-disabled'">去结算</div>
          </router-link>
        </div>
      </div>
      <!-- 购物车底部导航条END -->
    </div>
    <!-- 购物车主要内容区END -->

    <!-- 购物车为空的时候显示的内容 -->
    <div v-else class="cart-empty">
      <div class="empty">
        <h2>您的购物车还是空的！</h2>
        <p>快去购物吧！</p>
      </div>
    </div>
    <!-- 购物车为空的时候显示的内容END -->
  </div>
</template>
<script>
  import { mapActions } from "vuex";
  import { mapGetters } from "vuex";

  export default {
    data() {
      return {};
    },
    methods: {
      ...mapActions(["updateShoppingCart", "deleteShoppingCart", "checkAll"]),
      // 修改商品数量的时候调用该函数
      handleChange(currentValue, key, productID) {
        // 当修改数量时，默认勾选
        this.updateShoppingCart({ key: key, prop: "check", val: true });
        // 向后端发起更新购物车的数据库信息请求
        this.$axios
                .post("/api/user/shoppingCart/updateShoppingCart", {
                  user_id: this.$store.getters.getUser.user_id,
                  product_id: productID,
                  num: currentValue
                })
                .then(res => {
                  switch (res.data.code) {
                    case "001":
                      // “001”代表更新成功
                      // 更新vuex状态
                      this.updateShoppingCart({
                        key: key,
                        prop: "num",
                        val: currentValue
                      });
                      // 提示更新成功信息
                      this.notifySucceed(res.data.msg);
                      break;
                    default:
                      // 提示更新失败信息
                      this.notifyError(res.data.msg);
                  }
                })
                .catch(err => {
                  return Promise.reject(err);
                });
      },
      checkChange(val, key) {
        // 更新vuex中购物车商品是否勾选的状态
        this.updateShoppingCart({ key: key, prop: "check", val: val });
      },
      // 向后端发起删除购物车的数据库信息请求
      deleteItem(e, id, productID) {
        this.$axios
                .post("/api/user/shoppingCart/deleteShoppingCart", {
                  user_id: this.$store.getters.getUser.user_id,
                  product_id: productID
                })
                .then(res => {
                  switch (res.data.code) {
                    case "001":
                      // “001” 删除成功
                      // 更新vuex状态
                      this.deleteShoppingCart(id);
                      // 提示删除成功信息
                      this.notifySucceed(res.data.msg);
                      break;
                    default:
                      // 提示删除失败信息
                      this.notifyError(res.data.msg);
                  }
                })
                .catch(err => {
                  return Promise.reject(err);
                });
      }
    },
    computed: {
      ...mapGetters([
        "getShoppingCart",
        "getCheckNum",
        "getTotalPrice",
        "getNum"
      ]),
      isAllCheck: {
        get() {
          return this.$store.getters.getIsAllCheck;
        },
        set(val) {
          this.checkAll(val);
        }
      }
    }
  };
</script>
<style scoped>
  .shoppingCart {
    background-color: #f5f5f5;
    padding-bottom: 20px;
  }
  /* 购物车头部CSS */
  .shoppingCart .cart-header {
    height: 64px;
    border-bottom: 2px solid #ff6700;
    background-color: #fff;
    margin-bottom: 20px;
  }
  .shoppingCart .cart-header .cart-header-content {
    width: 1225px;
    margin: 0 auto;
  }
  .shoppingCart .cart-header p {
    font-size: 28px;
    line-height: 58px;
    float: left;
    font-weight: normal;
    color: #424242;
  }
  .shoppingCart .cart-header span {
    color: #757575;
    font-size: 12px;
    float: left;
    height: 20px;
    line-height: 20px;
    margin-top: 30px;
    margin-left: 15px;
  }
  /* 购物车头部CSS END */

  /* 购物车主要内容区CSS */
  .shoppingCart .content {
    width: 1225px;
    margin: 0 auto;
    background-color: #fff;
  }

  .shoppingCart .content ul {
    background-color: #fff;
    color: #424242;
    line-height: 85px;
  }
  /* 购物车表头及CSS */
  .shoppingCart .content ul .header {
    height: 85px;
    padding-right: 26px;
    color: #424242;
  }
  .shoppingCart .content ul .product-list {
    height: 85px;
    padding: 15px 26px 15px 0;
    border-top: 1px solid #e0e0e0;
  }
  .shoppingCart .content ul .pro-check {
    float: left;
    height: 85px;
    width: 110px;
  }
  .shoppingCart .content ul .pro-check .el-checkbox {
    font-size: 16px;
    margin-left: 24px;
  }
  .shoppingCart .content ul .pro-img {
    float: left;
    height: 85px;
    width: 120px;
  }
  .shoppingCart .content ul .pro-img img {
    height: 80px;
    width: 80px;
  }
  .shoppingCart .content ul .pro-name {
    float: left;
    width: 380px;
  }
  .shoppingCart .content ul .pro-name a {
    color: #424242;
  }
  .shoppingCart .content ul .pro-name a:hover {
    color: #ff6700;
  }
  .shoppingCart .content ul .pro-price {
    float: left;
    width: 140px;
    padding-right: 18px;
    text-align: center;
  }
  .shoppingCart .content ul .pro-num {
    float: left;
    width: 150px;
    text-align: center;
  }
  .shoppingCart .content ul .pro-total {
    float: left;
    width: 120px;
    padding-right: 81px;
    text-align: right;
  }
  .shoppingCart .content ul .pro-total-in {
    color: #ff6700;
  }
  .shoppingCart .content ul .pro-action {
    float: left;
    width: 80px;
    text-align: center;
  }
  .shoppingCart .content ul .pro-action i:hover {
    color: #ff6700;
  }
  /* 购物车表头及CSS END */

  /* 购物车底部导航条CSS */
  .shoppingCart .cart-bar {
    width: 1225px;
    height: 50px;
    line-height: 50px;
    background-color: #fff;
  }
  .shoppingCart .cart-bar .cart-bar-left {
    float: left;
  }
  .shoppingCart .cart-bar .cart-bar-left a {
    line-height: 50px;
    margin-left: 32px;
    color: #757575;
  }
  .shoppingCart .cart-bar .cart-bar-left a:hover {
    color: #ff6700;
  }
  .shoppingCart .cart-bar .cart-bar-left .sep {
    color: #eee;
    margin: 0 20px;
  }
  .shoppingCart .cart-bar .cart-bar-left .cart-total {
    color: #757575;
  }
  .shoppingCart .cart-bar .cart-bar-left .cart-total-num {
    color: #ff6700;
  }
  .shoppingCart .cart-bar .cart-bar-right {
    float: right;
  }
  .shoppingCart .cart-bar .cart-bar-right .total-price-title {
    color: #ff6700;
    font-size: 14px;
  }
  .shoppingCart .cart-bar .cart-bar-right .total-price {
    color: #ff6700;
    font-size: 30px;
  }
  .shoppingCart .cart-bar .cart-bar-right .btn-primary {
    float: right;
    width: 200px;
    text-align: center;
    font-size: 18px;
    margin-left: 50px;
    background: #ff6700;
    color: #fff;
  }
  .shoppingCart .cart-bar .cart-bar-right .btn-primary-disabled {
    float: right;
    width: 200px;
    text-align: center;
    font-size: 18px;
    margin-left: 50px;
    background: #e0e0e0;
    color: #b0b0b0;
  }
  .shoppingCart .cart-bar .cart-bar-right .btn-primary:hover {
    background-color: #f25807;
  }
  /* 购物车底部导航条CSS END */
  /* 购物车主要内容区CSS END */

  /* 购物车为空的时候显示的内容CSS */
  .shoppingCart .cart-empty {
    width: 1225px;
    margin: 0 auto;
  }
  .shoppingCart .cart-empty .empty {
    height: 300px;
    padding: 0 0 130px 558px;
    margin: 65px 0 0;
    background: url(../assets/imgs/cart-empty.png) no-repeat 124px 0;
    color: #b0b0b0;
    overflow: hidden;
  }
  .shoppingCart .cart-empty .empty h2 {
    margin: 70px 0 15px;
    font-size: 36px;
  }
  .shoppingCart .cart-empty .empty p {
    margin: 0 0 20px;
    font-size: 20px;
  }
  /* 购物车为空的时候显示的内容CSS END */
</style>